221234332272 has 20 divisors (see below), whose sum is σ = 571522025160. Its totient is φ = 73744777408.

The previous prime is 221234332247. The next prime is 221234332273. The reversal of 221234332272 is 272233432122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221234332273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2304524247 + ... + 2304524342.

It is an arithmetic number, because the mean of its divisors is an integer number (28576101258).

Almost surely, 2^221234332272 is an apocalyptic number.

It is an amenable number.

221234332272 is an abundant number, since it is smaller than the sum of its proper divisors (350287692888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221234332272 is a wasteful number, since it uses less digits than its factorization.

221234332272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609048600 (or 4609048594 counting only the distinct ones).

The product of its digits is 48384, while the sum is 33.

Adding to 221234332272 its reverse (272233432122), we get a palindrome (493467764394).

The spelling of 221234332272 in words is "two hundred twenty-one billion, two hundred thirty-four million, three hundred thirty-two thousand, two hundred seventy-two".